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Terrain surface roughness, often described abstractly, poses challenges in quantitative characterisation with various descriptors found in the literature. This study compares five commonly used roughness descriptors, exploring correlations…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Lei Fan , Yang Zhao

We propose a novel real-time LiDAR intensity image-based simultaneous localization and mapping method , which addresses the geometry degeneracy problem in unstructured environments. Traditional LiDAR-based front-end odometry mostly relies…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Wenqiang Du , Giovanni Beltrame

Achieving monocular camera localization within pre-built LiDAR maps can bypass the simultaneous mapping process of visual SLAM systems, potentially reducing the computational overhead of autonomous localization. To this end, one of the key…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Gongxin Yao , Xinyang Li , Luowei Fu , Yu Pan

We focus on the problem of class-agnostic instance segmentation of LiDAR point clouds. We propose an approach that combines graph-theoretic search with data-driven learning: it searches over a set of candidate segmentations and returns one…

Robotics · Computer Science 2019-12-12 Peiyun Hu , David Held , Deva Ramanan

Within the last years, the classification of variable stars with Machine Learning has become a mainstream area of research. Recently, visualization of time series is attracting more attention in data science as a tool to visually help…

Instrumentation and Methods for Astrophysics · Physics 2019-03-13 Christian Pieringer , Karim Pichara , Márcio Catelán , Pavlos Protopapas

LiDAR sensors provide rich 3D information about their surrounding{s} and are becoming increasingly important for autonomous vehicles tasks such as {localization}, semantic segmentation, object detection, and tracking. {Simulation}…

Robotics · Computer Science 2022-12-27 Jean Pierre Richa , Jean-Emmanuel Deschaud , François Goulette , Nicolas Dalmasso

Visual place recognition tasks often encounter significant challenges in landmark detection due to the presence of irrelevant objects such as humans, cars, and trees, despite the remarkable progress achieved by previous models, especially…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 Mohammad Javad Rajabi , Morteza Mirzai , Ahmad Nickabadi

Object detection from 3D point clouds remains a challenging task, though recent studies pushed the envelope with the deep learning techniques. Owing to the severe spatial occlusion and inherent variance of point density with the distance to…

Computer Vision and Pattern Recognition · Computer Science 2020-06-09 Liang Du , Xiaoqing Ye , Xiao Tan , Jianfeng Feng , Zhenbo Xu , Errui Ding , Shilei Wen

Machine learning (ML) models are constructed by expert ML practitioners using various coding languages, in which they tune and select models hyperparameters and learning algorithms for a given problem domain. They also carefully design an…

Machine Learning · Computer Science 2021-03-16 Subhajit Das , Alex Endert

Computers are widely utilized in today's weather forecasting as a powerful tool to leverage an enormous amount of data. Yet, despite the availability of such data, current techniques often fall short of producing reliable detailed storm…

Computer Vision and Pattern Recognition · Computer Science 2017-03-08 Yu Zhang , Stephen Wistar , Jia Li , Michael Steinberg , James Z. Wang

Researchers got success in mining the Web usage data effectively and efficiently. But representation of the mined patterns is often not in a form suitable for direct human consumption. Hence mechanisms and tools that can represent mined…

Human-Computer Interaction · Computer Science 2009-09-01 Ratnesh Kumar Jain , Dr. Suresh Jain , Dr. R. S. Kasana

In recent times, the scope of LIDAR (Light Detection and Ranging) sensor-based technology has spread across numerous fields. It is popularly used to map terrain and navigation information into reliable 3D point cloud data, potentially…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Aakash Kumar , Jyoti Kini , Mubarak Shah , Ajmal Mian

Despite the growing availability of 3D urban datasets, extracting insights remains challenging due to computational bottlenecks and the complexity of interacting with data. In fact, the intricate geometry of 3D urban environments results in…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Stefan Cobeli , Kazi Shahrukh Omar , Rodrigo Valença , Nivan Ferreira , Fabio Miranda

Existing model evaluation tools mainly focus on evaluating classification models, leaving a gap in evaluating more complex models, such as object detection. In this paper, we develop an open-source visual analysis tool, Uni-Evaluator, to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Changjian Chen , Yukai Guo , Fengyuan Tian , Shilong Liu , Weikai Yang , Zhaowei Wang , Jing Wu , Hang Su , Hanspeter Pfister , Shixia Liu

This paper investigates the user experience of visualizations of a machine learning (ML) system that recognizes objects in images. This is important since even good systems can fail in unexpected ways as misclassifications on photo-sharing…

Human-Computer Interaction · Computer Science 2020-08-06 Hendrik Heuer , Andreas Breiter

We propose a methodology for lidar super-resolution with ground vehicles driving on roadways, which relies completely on a driving simulator to enhance, via deep learning, the apparent resolution of a physical lidar. To increase the…

Robotics · Computer Science 2020-04-14 Tixiao Shan , Jinkun Wang , Fanfei Chen , Paul Szenher , Brendan Englot

Point clouds offer an attractive source of information to complement images in neural scene representations, especially when few images are available. Neural rendering methods based on point clouds do exist, but they do not perform well…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Weiwei Sun , Eduard Trulls , Yang-Che Tseng , Sneha Sambandam , Gopal Sharma , Andrea Tagliasacchi , Kwang Moo Yi

Point cloud 3D object detection has recently received major attention and becomes an active research topic in 3D computer vision community. However, recognizing 3D objects in LiDAR (Light Detection and Ranging) is still a challenge due to…

Computer Vision and Pattern Recognition · Computer Science 2020-10-30 Yilin Wang , Jiayi Ye

Visual localization, which estimates a camera's pose within a known scene, is a fundamental capability for autonomous systems. While absolute pose regression (APR) methods have shown promise for efficient inference, they often struggle with…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Sihang Li , Siqi Tan , Bowen Chang , Jing Zhang , Chen Feng , Yiming Li

Great progress has been made in point cloud classification with learning-based methods. However, complex scene and sensor inaccuracy in real-world application make point cloud data suffer from corruptions, such as occlusion, noise and…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Lifa Zhu , Changwei Lin , Chen Zheng , Ninghua Yang